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Finding the Fourth Proportional to 153,163.68, 211,144.31 and 101,394.04

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Solution

The fourth proportional to 153,163.68, 211,144.31 and 101,394.04 is: 139,777.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,163.68 : 211,144.31 = 101,394.04 : x
  2. Step 2: Convert to fraction form
    153,163.68/211,144.31 = 101,394.04/x
  3. Step 3: Cross multiply
    153,163.68x = 211,144.31 × 101,394.04
  4. Step 4: Simplify right side
    153,163.68x = 21,408,774,046.53
  5. Step 5: Solve for x
    x = 21,408,774,046.53/153,163.68
  6. Step 6: Final answer
    x = 139,777.09

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.